Reasonable Entry Layout of Lower Seam in Multi-Seam Mining Based on Numerical Simulation

Xiang Qian Wang; Da Fa Yin; Zhao Ning Gao; Qi Feng Zhao

doi:10.4028/www.scientific.net/AMM.295-298.2980

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 295-298Reasonable Entry Layout of Lower Seam in...

Reasonable Entry Layout of Lower Seam in Multi-Seam Mining Based on Numerical Simulation

Abstract:

Based on the geological conditions of 6# coal seam and 8# coal seam in Xieqiao Coal Mine, to determine reasonable entry layout of lower seam in multi-seam mining, alternate internal entry layout, alternate exterior entry layout and overlapping entry layout were put forward and simulated by FLAC3D. Then stress distribution and displacement characteristics of surrounding rock were analyzed in the three ways of entry layout, leading to the conclusion that alternate internal entry layout is a better choice for multi-seam mining, for which makes the entry located in stress reduce zone and reduces the influence of abutment pressure of upper coal seam mining to a certain extent,. And the mining practice of Xieqiao Coal Mine tested the results, which will offer a beneficial reference for entry layout with similar geological conditions in multi-seam mining.

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Periodical:

Applied Mechanics and Materials (Volumes 295-298)

Pages:

2980-2984

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.295-298.2980

Citation:

Cite this paper

Online since:

February 2013

Authors:

Xiang Qian Wang, Da Fa Yin, Zhao Ning Gao, Qi Feng Zhao

Keywords:

Entry Layout, FLAC-3D, Multi-Seam, Numerical Simulation

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References

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